Its handiest feature is the ability to search Twitter bios by location.

As you can see in the example below, I’ve searched for “social media Melbourne,” and it has provided a list of people who match this criterion and who can then be sorted by other factors including follower count, tweet count, and influence (social authority).

As with all the tools shown here, this is an important first step of the identification process.

People often forget that Twitter has an advanced search capability that enables you to search by specific locations.

In this case, I searched for “#socialmedia, social media marketing, social media Melbourne” and got a combination of suggestions as well as recent Tweets that matched my criteria.

Twitter’s location search enables you to capture tweets within a 15-mile radius of a given spot. That is useful for reps of brands and businesses that have physical locations seeking to identify conversation drivers near those locations.

GroupHigh will help you find relevant bloggers and online conversation drivers.

Even though this is a paid tool, it provides a number of advance search filters to help develop the most robust list possible. Again, some manual analysis will be required, but we use GroupHigh regularly and recommend it highly.

In the example below, we used the same search terms, “social media Melbourne” and could break down the results by mentions and core topic.

However, these tools are never silver bullets; a great deal of human interpretation and additional research are required.

Adam Vincenzini is a PR Daily contributor and the managing partner of Kamber, a specialist content marketing and social media agency based in Australia. A version of this story originally appeared on the company's blog. Follow Kamber on Twitter @KamberCo.